The force involved in falling of an apple from a tree is:

Question

The force involved in falling of an apple from a tree is:

1. A. Magnetic Force
2. B. Gravitational Force (Correct answer)
3. C. Contact Force
4. D. Electrostatic Force

Correct Answer

Option B — Gravitational Force

Detailed Solution & Explanation

The correct answer is Gravitational Force.

Key Points

• An apple falls because of the gravitational force of attraction between the apple and the Earth.
• Gravitation is a non-contact force, acting at a distance without any physical touching.
• Magnetic and electrostatic forces act only on magnetic or charged bodies, and a contact force requires physical contact.

Additional Information

• Newton's law of universal gravitation: F = G·m₁m₂/r², where G is the gravitational constant, 6.674 × 10⁻¹¹ N·m²/kg².
• The acceleration due to gravity on Earth is about 9.8 m/s²; it is slightly greater at the poles than at the equator because the Earth is not a perfect sphere.
• Mass stays constant everywhere, while weight (mass × g) changes with location — on the Moon, weight is roughly one-sixth of that on Earth.